long party. the samba contest is under way at rio de janeiro's carnival. ♪ things got started on sunday, 12 top class samba teams are taking part, each consisting of up to 4,000 members. they make lavish costumes and floats that pay tribute to everything from culture to painters to space travel. in some cases, the theme is up to interpretation. each team gets 80 minutes to perform. they're scored on dancing, costumes and unity. the two-day contest will continue until monday. the top six teams are expected to perform again at the champions parade on saturday, a few days after the carnival ends. we'll be back with more news next hour. i'm gene otani in tokyo. have a great day wherever you are.